Home / 858,280.40-1,287,420.60-708,689.60

Finding the Fourth Proportional to 858,280.40, 1,287,420.60 and 708,689.60

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Solution

The fourth proportional to 858,280.40, 1,287,420.60 and 708,689.60 is: 1,063,034.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,280.40 : 1,287,420.60 = 708,689.60 : x
  2. Step 2: Convert to fraction form
    858,280.40/1,287,420.60 = 708,689.60/x
  3. Step 3: Cross multiply
    858,280.40x = 1,287,420.60 × 708,689.60
  4. Step 4: Simplify right side
    858,280.40x = 912,381,590,045.76
  5. Step 5: Solve for x
    x = 912,381,590,045.76/858,280.40
  6. Step 6: Final answer
    x = 1,063,034.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.